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[Bug 1273386] Re: Neutron namespace metadata proxy triggers kernel crash on Ubuntu 12.04/3.2 kernel

 

This devstack bug was last updated over 180 days ago, as devstack
is a fast moving project and we'd like to get the tracker down to
currently actionable bugs, this is getting marked as Invalid. If the
issue still exists, please feel free to reopen it.

** Changed in: devstack
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1273386

Title:
  Neutron namespace metadata proxy triggers kernel crash on Ubuntu
  12.04/3.2 kernel

Status in devstack:
  Invalid
Status in neutron:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  In the past 9 days we have been seeing very frequent occurences of
  this kernel crash: http://paste.openstack.org/show/61869/

  Even if the particular crash pasted here is triggered by dnsmasq, in
  almost all cases the crash is actually triggered by the neutron metada
  proxy.

  This also affects nova badly since this issue, which appears namespace
  related, results in a hang while mounting the ndb device for key
  injection.

  logstash query:
  http://logstash.openstack.org/#eyJzZWFyY2giOiJcImtlcm5lbCBCVUcgYXQgL2J1aWxkL2J1aWxkZC9saW51eC0zLjIuMC9mcy9idWZmZXIuYzoyOTE3XCIgYW5kIGZpbGVuYW1lOnN5c2xvZy50eHQiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6ImN1c3RvbSIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJmcm9tIjoiMjAxNC0wMS0xNlQxODo1MDo0OCswMDowMCIsInRvIjoiMjAxNC0wMS0yN1QxOToxNjoxMSswMDowMCIsInVzZXJfaW50ZXJ2YWwiOiIwIn0sInN0YW1wIjoxMzkwODUwMzI2ODY0fQ==

  We have seen about 398 hits since the bug started to manifest.
  Decreased hit rate in the past few days is due to less neutron patches being pushed.

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References